Plastering-strip



(No Model.)

G. AHB-ENS.

PLASTBRING STRIP.

Patented Sept.

lei

unllullmnlm UNITED 'STATES PATENT OFFICE.

GEORGE AHRENS, OF CRETE, ASSIGNOR OF ONE-HALF TO HENRY SOHERER, CHICAGO, ILLINOIS.

rrLAsTERluca-STRlP.l

SPECIFICATION' forming part of Letters Patent No. 349,331I dated September 21, 1886.

Application tiled February 91886. Serial No. 191,285.

To all whom it may concern:

Be it known that I, GEORGE AHRENS, a citizen of the United States of America, residing at Crete, in the county of Will and State of Illinois, have invented certain new and useful Improvements in Plastering-Strips, of which the following is a specificati on, reference being hadtherein to the accompanying drawings.

The object I have in view is to produce plastering-strips that, by simple means, will provide a continuous wooden surface behind the plastering. will economize in the quantity of plastering material required, and will make the plastering rigid with the wall, notwithstanding the shrinkage of the strips. y

For this purpose my invention mainly cons'ists of strips having to their side edges square tongues that provide parallel shoulders for the plastering overlapping the same; also, in grooves formed in the edges of the strips for inserting common laths longitudinally between such strips to form a backing for the plaster, and at the same time providing spaces behind such laths for aircirculation, and, finally, in angular grooves cut longitudinally into the faces of such plastering-strips for furnishing additional hold to the plastering 'material, all as will be more fully hereinafter de-` scribed, and specifically claimed.

In the accompanying drawings, Figure 1 represents a sectional view of a series of plastering-strips as attached to a wall of brick; Fig. 2, an elevation of the same; and Fig. 3, a section of a modified shape as attached to sheathing.

s Corresponding letters in the several figures of the drawings designate like parts.

The wooden strips A, after being cut the desired width out of one-inch boards, arer passed through a shaping-machine for grooving out both edges so as to form tongues a for holding the plaster, and grooves b for inserting the laths B. These strips A being nailed against the brick wall or against the ceilingjoist parallel with each other, and a distance apart for a common plastering-lath, B, to be inserted between each two such strips, the plastering material in being applied will press in between the strips andagainst the laths,

5o so as to form rectangular tongues behind the rectangular tongues of the strips, whereby a firm hold of the plastering is obtained that will not be diminished by the usual shrinkage (No model.)

of such plastering-strips with drying, as is the case with dovetailed strips, since the parallel sides of the tongues will not release the plastering with all the shrinkage possible. The open spaces behind the laths B will form air-circulating channels for keeping the brick-wall dry and ventilated.

Into the face of each plasteriug-strip I cut longitudinally two angular channels or grooves, c, that will provide additional adhesion for the plastering material partially crowded therein.

In wooden buildings, where the walls are formed of sheathing, the plastering-strips need be only one-half the thickness, as shown by Fig. 3, no laths whatever being required, but only the tongues a for holding the plastering.

What I claim is- 1. As an article of manufacture, plasteiingstrips having tongues for holding the plaster, and formed with grooves on their out-er face, one to each side of the center of such strip, and said grooves inclined toward each other and toward the center of the strip, as set forth.

2. As an article of manufacture, plasteringstrips having square and parallel tongues for holding the plaster, and formed with grooves on their outer faces, as set forth.

3. As an article of manufacture, plasteringstrips having tongues for holding the plastering, and grooves for holding laths that forln the backing for the plastering, substantially as and for the purpose set forth.

4. As an article of manufacture, plasteringstrips having tongues with parallel sides for holding the plastering, and grooves for holding the laths, and having angular grooves in their faces, all substantially as and for the purpose set forth.

. 5. As an article of manufacture, the strips A, having tongues a with parallel sides, and angular grooves c, as and for the purpose set forth.

6. As an article of manufacture, the strips A, having rectangular tongues a, grooves b, and angular grooves c, all substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE AHRENS.

Witnesses:

ANTON SCHOENINGER, HARRIs W. HUEHL. 

